Very important for Google Authorship. Quoting Othar Hansson (Google Authorship Project), "We know that great content comes from great authors, and we're looking closely at ways this markup could help us highlight authors and rank search results."
There are search benefits when you link content with authors (Rel="author", Rel=contributor,...), more exposure and engagement.

I Think we are all still trying to figure out Google+. I predicted it would die just like wave, and it would have, if Google wasn't using it's monopoly to force it down everyone throats.

Few things that I've seen:

- Google+ is being more and more important to blog based sites, that live off Article Writing.
- Very important into building Authority for the Author which seems to have a large impact on how Google is using Google+ to inject Google+ supported information into normal search results.
- Google+ is more and more important it seems every month for certain keyphrases, Google search "SEO Google+"

I have not seen an impact on results by Google+ for my topic area, but that doesn't mean it's not coming. We are trying to hedge against it.

Talk to anyone that does not have a horse in the Google Game and they will say "Google + What?" Normal people don't use it and if Google cannot get normally people to use it then it will fail. Only perhaps supported by, ironically the SEO community, and Content Writers, Authors. If that is the only group that supports it, it's open for manipulation, and if so very well could be the downfall of Google.

My recommendation; buy the Google Kool aid. It's not like its going to kill you right?

And what about any strategy of promoting a site via G+? I've realized recently that on certain keywords my site is in the top 10, to be more exact not my site but my G+ profile connected to it with the link to my site. But the most interesting and strange thing is that on other PC's or in other browsers I don't see my site in TOP 10.

And what about any strategy of promoting a site via G+? I've realized recently that on certain keywords my site is in the top 10, to be more exact not my site but my G+ profile connected to it with the link to my site. But the most interesting and strange thing is that on other PC's or in other browsers I don't see my site in TOP 10.

I think there is value for Google plus even its not actually using that cause its created mostly people not looking for social conversation with people and even not searching brand presence in Google plus. Still I am experiencing better visits from twitter or Facebook in compare of Google plus. No doubt millions of members have been involved with Google plus but actually they are not performing their account. Even its only a way for improving search engine ranking but not social sites

Like other social networking sites Google+ is also useful in point of view for seo. By making a page on Google+ you can manage your website traffic and also invite your friend circle to this activity.
_________________SEO Service Company